U.S. patent number 3,737,863 [Application Number 05/190,997] was granted by the patent office on 1973-06-05 for medical testing system.
This patent grant is currently assigned to Bio-Logics, Inc.. Invention is credited to Robert W. Geer, Norman P. Jessee, James A. Mahood, Dennis C. Peterson, Richard C. Rowland.
United States Patent |
3,737,863 |
Rowland , et al. |
June 5, 1973 |
MEDICAL TESTING SYSTEM
Abstract
A medical testing system comprising a plurality of medical test
units, a computer connected to receive test results from said test
units and having a plurality of programs each selectable by an
operator to cause said computer to acquire and process test results
from a respective one of said test units, visual display means
connected to said computer to visually display said test results
and to display communications from said computer to said operator,
a keyboard for permitting said operator to communicate with said
computer, and print out means connected to said computer for
printing a report of the tests performed. Both method and apparatus
are disclosed.
Inventors: |
Rowland; Richard C. (Bountiful,
UT), Mahood; James A. (Salt Lake City, UT), Jessee;
Norman P. (Riverton, UT), Geer; Robert W. (Salt Lake
City, UT), Peterson; Dennis C. (Salt Lake City, UT) |
Assignee: |
Bio-Logics, Inc. (Salt Lake
City, UT)
|
Family
ID: |
22703688 |
Appl.
No.: |
05/190,997 |
Filed: |
October 20, 1971 |
Current U.S.
Class: |
600/301; 902/40;
128/920 |
Current CPC
Class: |
G16H
40/63 (20180101); G16H 10/60 (20180101); Y10S
128/92 (20130101) |
Current International
Class: |
G06F
19/00 (20060101); G06f 003/00 () |
Field of
Search: |
;340/172.5 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Zache; Raulfe B.
Claims
What is claimed is:
1. In the method of operating a medical testing system including a
medical test unit operable to perform a medical test relating to a
physiological parameter of a patient and to provide an electric
signal indication related to said physiological parameter, a
keyboard having a plurality of operator-actuated key switches, each
operable to provide a unique electrical signal indication in
response to the operation thereof, an oscilloscope display operable
in response to electrical signals applied thereto to generate a
corresponding visual display, and a programmable multi-purpose
computer having inputs connected for response to said medical test
unit and to said keyboard, and having outputs connected to control
the operation of said display, the steps of:
providing from said computer, in response to electric signal
indications resulting from the operation of a first one of said key
switches, signals for controlling said display to generate a visual
image listing a plurality of medical tests which can be
performed;
providing from said computer, in response to electric signal
indications resulting from operation of at least a second one of
said key switches, signals to said display for controlling said
display to generate a visual image listing instructions for an
operator to follow in performing the medical test selected by
operation of at least said second key switch, said instructions
including instructions for the operator to orally present to said
patient relating to patient activity necessary for the performance
of the test, and including instructions to the operator to actuate
at least a third one of said key switches, said instructions being
displayed in the order in which they are to be followed; and
received at said computer, in response to electric signal
indications resulting from operation of at least said third key
switch, said electric signal indication from said medical test
unit.
Description
BACKGROUND
1. Field of Invention
This invention relates to data processing and is particularly
directed to apparatus for semi-automatically acquiring and
processing medical test data regarding a patient.
Progress in medical testing methods and apparatus has proliferated
the number and type of tests which medical laboratories are called
upon to perform. Moreover, doctors and hospital staffs increasingly
relay upon such test results to aid in diagnosis and treatment and,
hence, place additional demands upon the time of the technicians
who perform such tests. Unfortunately, aside from the performance
of the tests and collection of the test results, considerable time
and effort is required to correlate and process the test results
into a form which is meaningful to the doctor or hospital staff.
Thus, numerous mathematical computations are often required to
convert test results into useful data and this data must often be
correlated with other data in order to prepare a report which will
convey the necessary information. As a result, several days are
often required between performance of the test and delivery of a
report of the test to the doctor or hospital staff.
2. Prior Art
Numerous techniques have been proposed heretofore for alleviating
these problems. However, none of the prior art techniques have been
entirely satisfactory. Some devices have been proposed for
automatically performing a given test. However, the time required
for actually performing tests is minimal compared to the time
required for processing test results. Conventional data processing
techniques have also been proposed for processing the test results.
These techniques serve the purpose, but require highly skilled
personnel who are trained as computer operators as well as medical
technicians. Such highly trained personnel are extremely rare and
command very high salaries. Moreover, conventional data processing
machines include capabilities which are unnecessary for most
medical laboratories but which increase the cost of the machines.
Consequently, such machines can only be afforded by large
hospitals, and the like, having many departments, other than the
medical laboratory, which can utilize the additional capabilities
of the machines. In addition, some special purpose mahines have
been proposed which can perform a specific test and process the
data from the test. However, such special purpose machines are
extremely expensive and are generally compatible only with a
specific type of testing apparatus. Thus, the purchase of such
machines renders existing equipment obsoltee and locks the
laboratory to a single source of supply for replacement parts and
service.
BRIEF SUMMARY AND OBJECTS OF INVENTION
These disadvantages of the prior art are overcome with the present
invention and a semi-automatic testing device is provided which
employs conventional testing equipment for performing a wide
variety of tests and which can be operated by semi-skilled persons
having a level of training below that of conventional medical
technicians and having no special knowledge of data processing, yet
which acquires and processes the test results substantially in real
time.
The advantages of the present invention are preferably attained by
providing a data processing device which is compatible with
conventional testing equipment for obtaining results from a variety
of tests and which is operable only by a technician to select a
desired test program and to provide instructions and information to
the technician in conversational language and by real time visual
displays, and responds to simple push-button commands by the
technician to acquire and store the data and to process the data
into a report which will be meaningful to a doctor or nurse.
Accordingly, it is an object of the present invention to provide
improved methods and apparatus for medical testing.
Another object of the present invention is to provide improved data
processing equipment for processing medical test results into a
form useful to doctors and hospital staffs.
A further object of the present invention is to provide methods and
apparatus for acquiring and processing medical test results which
is operable by semi-skilled personnel.
An additional object of the present invention is to provide
semi-automatic means for acquiring and processing medical test
results from a variety of types of tests.
Another object of the present invention is to provide
semi-automatic means for acquiring and processing medical test
results which is compatible with conentional test equipment.
A specific object of the present invention is to provide
semi-automatic means for acquiring and processing medical test
results comprising a computer connectable to receive test results
from a plurality of types of medical test equipment and having a
plurality of programs each selectable by an operator to acquire and
process results from a respective type of medical test equipment,
each of said programs including commands and questions for the
operator in conversational language calling for responses by the
operator by pressing an appropriate button, means for visually
displaying information, and means for presenting the processed data
in a form meaningful to doctors and the like.
These and other objects and featues of the present invention will
be apparent from the following detailed description, taken with
reference to the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is an isometric view of a medical testing device embodying
the present invention;
FIG. 2 is a block diagram of the electronic system of the testing
device of FIG. 1; and
FIG. 3 is a flow diagram illustrating the procedure for operating
the testing device of FIG. 1.
DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENT
In that form of the present invention chosen for purposes of
illustration, FIG. 1 shows a medical testing unit 2, such as a
spirometer, coupled to a control console 4 which, in turn, is
coupled to a suitable printer 6 or 40. It should be understood that
the medical testing unit 2 may be substantially any medical test
device which has an electrical data output or which can be modified
to provide an electrical data output. As shown, the control console
4 is divided into an upper portion 8, a central portion 10, and a
lower portion 12, and a control keyboard 14 projects forwardly from
the lower portion 12 of the console 4. The central portion 10
houses a general purpose mini-computer, such as that sold under the
trademark "NOVA" by Data-General Corporation, Framingham, Mass. The
upper portion 8 houses a cathode ray tube, as indicated at 16, and
a cassette tape deck 18. The lower portion 12 contains a suitable
power supply and a swing-out card cage containing a plurality of
electronic circuit cards, such as the tape controller, computer
interface cards and analog to digital converter with
multiplexer.
FIG. 2 is a block diagram showing the electronic system of the
device of FIG. 1. As shown, a plurality of medical test units 2 are
connected to supply test results through resistance matching
network 20, analog-to-digital converter 22, and A/D interface 24 to
the mini-computer 26, which is housed in lower portion 12 of the
control console 4 of FIG. 1. Up to sixteen medical test units 2,
which may be either similar or different, can be connected to each
control console 4. The control keyboard 14 communicates with the
mini-computer 26 through a character memory 28 and multiplexer 30.
The character memory is capable of storing and generating, on
command, up to 1024 characters and 128 by 128 bit graphics. The
mini-computer 26 is also capable of communicating with disc storage
unit 32 and, through tape control 34, with the cassette tape deck
18 of console 4 or up to four optional nine-track tape decks 36.
The mini-computer 26 communicates with the human operator by
causing displays to be presented on the cathode ray tube 16 of the
console 14. If desired, these displays may also be coupled to a
closed circuit television system 38. Upon command, the
mini-computer 26 causes a test report to be typed out on printer
40. If desired, additional remote printers 40 or high speed
printers 6 may be connected to communicate with the mini-computer
26 and these remote printers may or may not include a keyboard,
similar to control keyboard 14. The mini-computer 26 may also be
coupled, through inter-computer interface 44, to cooperate with
other mini-computers, seen at 46, and may be coupled, through main
computer interface 48, to communicate with a general purpose
computer 50, such as an IBM 360 or the like. A real time clock 52
is provided to facilitate timing of test intervals and the
like.
As best seen in FIG. 1, the control keyboard 14 compirses a
standard typewriter keyboard 54, a "YES" button 56, a "NO" button
58, an "ENTER" button 60, a group of buttons 62, 64, 66 and 68 for
controlling positioning of the cursor of the cathode ray tube 16, a
position button 69 which returns the cursor to the upper left hand
corner, and an erase button 70. In addition, a "POWER ON" button
72, a "GROUND OK" button 74, and a "DISPLAY OPTIONS" buttons 76 are
provided on the vertical rear panel of the control keyboard 14.
In use, the operator turns on the device by pressing the "POWER ON"
button 72 and looks at the "GROUND OK" button 74 to determine that
the device is properly grounded. These buttons 72 and 74 are
preferably internally lighted pushbuttons which will be lighted
under normal conditions and will be extinguished in the event of an
abnormal condition. Next, the operator presses the "DISPLAY
OPTIONS" button 76. In response to this, the mini-computer 26
causes the cathode ray tube 16 on the control console 4 to display
a list of the tests which may be performed with the various medical
test units 2. Typically, such a test selection display might appear
as follows:
0 Loader 1 Spirometry 2 Residual Volume (Display 1) 3 Diffusion
Capacity 4 Alveolar Ventilation 5 Blood Gas 6 ECG
as indicated above, up to 16 medical test units 2 may be connected
to each control console 4 and the medical test units 2 may be
either the same or different. Thus, for example, 16 spirometers
might be connected to a given control console. In such a case, the
display would merely show the identifying numbers of the medical
test units.
When the test selection display is presented, the operator types
the number of the desired test on the typewriter keyboard 54 and
presses the "ENTER" button 60, whereupon the mini-computer 26
causes the cathode ray tube 16 to display the selected medical test
program. For example, if the operator selected the spirometry test
program, the following display would appear on cathode ray tube
16:
Calibrate 1 Patient Information 2 Tidal Volume (Display 2) 3 Vital
Capacity 4 Forced Vital Capacity 5 Maximum Voluntary Ventilation 6
Typed Report 7 End of Program
The operator selects the specific test to be performed by typing
the number of the test on the typewriter keyboard 54 and, again,
presses the "ENTER" button 60; whereupon, the mini-computer 26
causes the cathode ray tube 16 to display the instructions for
performing the selected test in conversational language. For
example, if the operator selected the forced vital capacity test,
the following display would appear:
Forced Vital Capacity Analysis
(Display 3) 1 Inhale to Maximum 2 Push Enter 3 Exhale Completely as
hard and fast as possible!!
The operator would then read instructions "1" and "3" to the
patient and would press "ENTER" button 60. As sson as button 60 is
pressed, the mini-computer 26 begins to accept and process data
from the medical test unit 2 and casues the cathode ray tube 16 to
trace a graph of the patient's performance.
At the end of a selected time period or logical end of test, for
example, 15 seconds, the mini-computer 26 will cease accepting
data, make the necessary computations, and casue the cathode ray
tube 16 to display the test results, as follows:
Actual Mea- (Percent of sured Values) Predicted) FVC 6113 ML 124 %
TIME 5 SEC FEV 1 4659 ML 112 % (Display 4) FEV 2 5386 ML FEV 3 5885
ML/S FEF 8857 ML/S 97 % MMEFR 4334 ML/S 80 % STORE DATA?
this display is accompanied by the graph of the patient's
performance, which enables the operator to make a more precise
analysis of the validity of the test. The operator then answers the
question "STORE DATA?" by pressing either "YES" button 56 or "NO"
button 58. The mini-computer 26, then, either stores or destroys
the data, as instructed, and again causes cathode ray tube 16 to
display the list of specific tests (Display 2) to permit the
operator to either repeat the test or select another. If the data
is stored and the test repeated, the results of both tests will be
displayed in order to permit comparison. When all of the desired
tests have been completed, the operator types the number
corresponding to "End of Program" on typewriter keyboard 54 and
presses "ENTER" button 60. Thereupon, the mini-computer 26 causes
printer 40 to type out a test report in a form which is meaningful
to the doctor or hospital staff member ordering the tests. FIG. 3
is a flow chart illustrating the foregoing procedures.
When the "Patient Information" item (Display 2) is selected, the
mini-computer 26 causes the cathode ray tube 16 to display a
patient informatin form with spaces indicated for appropriate
information, such as name, address, age, sex, height, weight, etc.
The operator then employs position buttons 62-69 to move the sensor
of the cathode ray tube 16 to the start of a desired space, types
in the necessary information on typewriter keyboard 54 and presses
"ENTER" button 60 to enter the information. Comments regarding test
results are entered in a similar manner.
Since the device of the present invention is capable of supplying
reports, substantially in real time, from a plurality of medical
test units, the device can be employed for additional purposes,
such as monitoring patients in an intensive care unit. Moreover,
since many of the components of the device may be remotely located,
additional utility is afforded. Thus, for example, the printers 40
could be located in the operating room of a hospital to permit
immediate access to the results of tests performed in a remote
laboratory.
The programming, sub routines, and other relationships employed in
utilizing a well known general purpose computer in the performance
of the present invention are set forth in a thesis of Stephen
Stumph entitled THE SYNTHESIS OF A MOBILE COMPUTERIZED HEALTH
TESTING SYSTEM, Georgia Institute of Technology, June, 1971, and
enumerable references cited therein.
Obviously, numerous variations and modifications may be made
without departing from the present invention. Accordingly, it
should be clearly understood that the form of the present inventon
described above and shown in the accompanying drawings is
illustrative only and is not intended to limit the scope of the
present invention.
* * * * *